.my-input-number {
    position: relative;
    display: inline-block;
    width: 140px;
    line-height: 38px;
}

.my-input-number span {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.my-input-number .my-input {
    display: block;
    position: relative;
    font-size: 14px;
    width: 100%;
}

.my-input-number .my-input__inner {
    -webkit-appearance: none;
    background-color: #fff;
    background-image: none;
    border-radius: 4px;
    border: 1px solid #dcdfe6;
    box-sizing: border-box;
    color: #606266;
    display: inline-block;
    font-size: inherit;
    height: 40px;
    line-height: 40px;
    outline: none;
    padding: 0 15px;
    transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
    width: 100%;
    padding-left: 50px;
    padding-right: 50px;
    text-align: center;
}

.my-input-number .decrease,
.my-input-number .increase {
    position: absolute;
    z-index: 1;
    top: 1px;
    width: 40px;
    height: 38px;
    text-align: center;
    background: #f5f7fa;
    color: #606266;
    cursor: pointer;
    font-size: 13px;
}

.my-input-number .decrease {
    left: 1px;
    border-radius: 4px 0 0 4px;
    border-right: 1px solid #dcdfe6;
}

.my-input-number .increase {
    right: 1px;
    border-radius: 0 4px 4px 0;
    border-left: 1px solid #dcdfe6;
}

.my-input-number .decrease.is-disabled,
.my-input-number .increase.is-disabled {
    color: #c0c4cc;
    cursor: not-allowed;
}